- Tytuł:
- Some Mesoscopic Rings: Exact Simulations and Experiment
- Autorzy:
-
Kamieniarz, G.
Matysiak, R.
Caramico D'Auria, A.
Esposito, F.
Benelli, C. - Powiązania:
- https://bibliotekanauki.pl/articles/2014557.pdf
- Data publikacji:
- 2000-12
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.40.Mg
75.40.Cx
75.10.Jm - Opis:
- A numerical transfer-matrix approach and an exact diagonalization technique exploiting the point-group symmetry are worked out in the framework of quantum statistical mechanics and group theory for finite rings. They are applied to spin models of the high nuclearity cyclic clusters [Mn(hfac)$\text{}_{2}$NITPh]$\text{}_{6}$ and Ni$\text{}_{12}$(O$\text{}_{2}$CMe)$\text{}_{12}$(chp)$\text{}_{12}$(H$\text{}_{2}$O)$\text{}_{6}$(THF)$\text{}_{6}$. The microscopic parameters of both molecules (J/k$\text{}_{B}$=350±10 K and J/k$\text{}_{B}$=8.5 K±0.5, g=2.23±0.01, respectively) are then obtained from a fit of the theoretical susceptibility curves to the experimental results which are supplemented for Ni$\text{}_{12}$ by new low-temperature measurements.
- Źródło:
-
Acta Physica Polonica A; 2000, 98, 6; 721-727
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł